Improvement in lens attachments for gas-burners



Malas@ Lens-Attachmefnt for Gas-Burners.

Patented Jan. 26, 1875.

[nue/afan i UNITED .STATES PATENT OFFICE.

MONTGOMERY o. Mmes, OF WASHINGTON, DIsTRIoT OF ooLuMBIA: A

IMPROVEMENT IN LENS ATTACHMENTS FOR GASB`RNERS Specification forming part of Letters Patent No. 159,199, dated January 26, 1875; applicatomtiled .March 11, 1873.

To all whom it may concern.-

.Be lit known that I, MONTGOMERY C. MEIGs, of IVashington city, in the District of Columbia, have invented `an Improved Di- Optric Illuminating Apparatus, of which the following is a specification:

The object of my invention is to'concentrate light upon an object at some distance from the illuminating agent, which Object I attain by combining-alight and 'a glass lens glass bottle provided with a neck, B, through i which it may be filled with some transparent liquid, such as water or a solution of salts. A

stem or plug, C, covered with cork D,or some other elastic substance, is inserted into, and

tightly closes, this neck. For this covered plug a stem -fitted by cement or by grinding.

may be substituted, acting, if ground, Without packing. The stem acts both as a stopper and as a s upport. A gas-burner, E, is made adninstable in or near the principal focus ot' the compound lens A, being provided With an ori, dinary joint or coupling, F.

In order to adapt my apparatus to ordinary gas-xtures, I construct a supplementi ary bracket, G, with a socket, H, to tit over the ordinary burner, and with a pivoted burner or swinging ar'rn E, through both of which, as Ewell as through one end of the bracket G, a channel is formed to conduct gas to the burner. The stem C is provided with an eye, which ts upon the bracket G, the stein', or globesupport, and, consequently, the lens may be adjusted relatively to the light.

' As thesocketpiece H turns freely horizontally/upon the burner, and as the lens and light are also adjustable around their pivots or Ypoints of support, it is obvious that the light may be thrown upon almost any desired spot. 1 rI he apparatus may also readily be removed from one chandelier and applied to another.

When it is desired to x the apparatus permanently in one place, a perforated stem fitting -On the central boss of the-bracket piece, or any other suitablecoupling which will allow the stein to 'turn on an `axis at right angles to a line drawn through G F, Fig. l, and having a screwed socket, may be substituted for the pivoted stem and turning socket-piece H above described.

For usein general, thelens should be about six inches in diameter, and its radiuses of curvature may be varied at will. For large rooms, the size of the lens advantageously may be increased. 1

One such lens, possessing the capacity for adjustment of this apparatus; if lplaced upon a bracket or candelabrum on the sidewall of a room, or on the gallery-rail of a church or` hall, could readily be adjusted to cast its beam ot'light upon the reading-desk of the Premierenlecturer..andtliusneble hints.. "dispensewith lights about the desk, or with chandeliers above or in -front of him, which are so fatiguing to the eyes of anaudience. The light may also be so arranged in the ceiling as to throw its rays vertically downward, or nearlyv so.

Several such lights and' lenses may be mounted upon brackets and chandeliers, and so adjusted asto concentrate their rays of light upon any book, map, picture, diagram', or piece of appara-tus ou the walls, desks, or tables which it'may be desired strongly to illu ininate.

I claim as my inventiou- I l. Ihe combination of a supplementary bracket, adaptedto be mounted on an ordinary gas-burner, a h `fdow glass 1ensmountedou the supplementary bracket, and adapted to contaii" transparent liquid, anda burner also mounted on said bracket, these members being constructed and operating substantially as set forth.'

2. The lsupplenientary bracket, provided with a socket adapted to fit on anA ordinary gas-burner, a support for a dioptric lens, and

a burner'adjnstable both vertically and horizontally, substantially as and for the purpose set forth.V

. Witnesses:

GEO. K. FINOKEL, L. F. RMIDOLPH.c 

